Rate And Regulatory Matters (Regulatory Assets and Liabilities and Retail Rate Proceedings - Narrative) (Details)	1 Months Ended																																								3 Months Ended				6 Months Ended		8 Months Ended	12 Months Ended												20 Months Ended	24 Months Ended	36 Months Ended	120 Months Ended	180 Months Ended
	Jan. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Nov. 30, 2024 USD ($)	Oct. 31, 2024 USD ($) MW kV	Sep. 30, 2024 USD ($)	Aug. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) kWh	Apr. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Feb. 29, 2024 USD ($)	Jan. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($) $ / unit	May 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jan. 31, 2023 USD ($)	Nov. 30, 2022 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Feb. 28, 2022 USD ($)	Oct. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jul. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)	Jan. 31, 2017	Jan. 31, 2014 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2022 USD ($)	Apr. 30, 2023 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2019 $ / kWh	Mar. 31, 2018 $ / kWh	Mar. 31, 2017 $ / kWh	Dec. 31, 2021 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2022 USD ($)	Oct. 01, 2012 USD ($)	Dec. 31, 2026 USD ($)	Jan. 01, 2025	Apr. 01, 2022 USD ($)	Jan. 31, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2019	Jan. 01, 2018 USD ($)
Regulatory Asset [Line Items]
Deferred Fuel Cost		$ 0																																											$ 0					$ 0		$ 169,967,000
Regulatory Asset, Noncurrent		5,255,509,000																																											5,255,509,000					5,255,509,000		5,669,404,000
Regulatory Liability, Noncurrent		3,609,463,000																																											3,609,463,000					3,609,463,000		3,116,926,000
Asset Impairment Charges																																																		107,134,000		42,679,000		$ (163,464,000)
Increase (Decrease) in Regulatory Liabilities																																																		660,559,000		463,805,000		(266,559,000)
Increase (Decrease) in Other Regulatory Assets																																																		(378,514,000)		(435,877,000)		(576,859,000)
Increase (Decrease) in Deferred Fuel Costs																																																		(182,578,000)		(759,361,000)		393,746,000
Deferred Fuel Costs Current Liabilities		237,146,000																																											237,146,000					237,146,000		218,927,000
Public Utilities, Property, Plant and Equipment, Transmission		10,414,000,000																																											10,414,000,000					10,414,000,000		9,927,000,000
Customer advances for construction, noncurrent		634,587,000																																											634,587,000					634,587,000		292,077,000
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Regulatory Asset [Line Items]
Disposal Group, Assets, Regulatory Asset, Noncurrent		35,381,000																																											35,381,000					35,381,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		1,611,000																																											1,611,000					1,611,000
Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost		0																																											0					0		24,800,000
Regulatory Asset, Noncurrent		1,637,967,000																																											1,637,967,000					1,637,967,000		1,648,852,000
Regulatory Liability, Noncurrent		1,692,547,000																																											1,692,547,000					1,692,547,000		1,407,689,000
Monthly regulatory liability established to reflect tax benefits already included in retail rates																																																																						$ 9,100,000
Deferred Fuel Cost - Net Asset (Liability)		163,400,000																																											163,400,000					163,400,000		192,900,000
Proceeds from Legal Settlements																																					$ 59,000,000
Increase (Decrease) in Regulatory Liabilities																					$ 103,000,000							$ 224,000,000																						452,731,000		225,645,000		(4,783,000)
Increase (Decrease) in Other Regulatory Assets																																																		(1,937,000)		(407,327,000)		(720,487,000)
Increase (Decrease) in Deferred Fuel Costs																																														$ 225,000,000				(29,494,000)		(134,383,000)		113,809,000
Deferred Fuel Costs Current Liabilities		$ 5,421,000																																											$ 5,421,000					$ 5,421,000		0
Customer rate credits																																																															$ 11,000,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		14.00%																																											14.00%					14.00%
State Effective Income Tax Rate, Percent		7.50%																																											7.50%					7.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 4,339,000,000																																											$ 4,339,000,000					$ 4,339,000,000		4,283,000,000
Customer advances for construction, current		151,662,000																																											151,662,000					151,662,000		0
Customer advances for construction, noncurrent		291,842,000																																											291,842,000					291,842,000		115,102,000
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]
Regulatory Asset [Line Items]
Disposal Group, Assets, Regulatory Asset, Noncurrent		8,947,000																																											8,947,000					8,947,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		1,214,000																																											1,214,000					1,214,000
Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		525,847,000																																											525,847,000					525,847,000		579,076,000
Regulatory Liability, Noncurrent		59,544,000																																											59,544,000					59,544,000		33,696,000
Deferred Fuel Cost - Net Asset (Liability)		(126,300,000)																																											(126,300,000)					(126,300,000)		(130,600,000)
Proceeds from Legal Settlements																																					36,000,000
Increase (Decrease) in Regulatory Liabilities																																																		17,985,000		(59,513,000)		20,165,000
Increase (Decrease) in Other Regulatory Assets																																																		(53,229,000)		59,616,000		57,028,000
Increase (Decrease) in Deferred Fuel Costs																																																		4,329,000		(273,856,000)		21,333,000
Deferred Fuel Costs Current Liabilities		$ 126,316,000																																											$ 126,316,000					$ 126,316,000		130,645,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		33.00%																																											33.00%					33.00%
Public Utilities, Property, Plant and Equipment, Transmission		$ 1,567,000,000																																											$ 1,567,000,000					$ 1,567,000,000		1,483,000,000
Customer advances for construction, noncurrent		112,618,000																																											112,618,000					112,618,000		32,659,000
Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost		0																																											0					0		6,148,000
Regulatory Asset, Noncurrent		133,261,000																																											133,261,000					133,261,000		182,367,000
Regulatory Liability, Noncurrent		260,312,000																																											260,312,000					260,312,000		90,434,000
Deferred Fuel Cost - Net Asset (Liability)		8,000,000.0																																											8,000,000.0					8,000,000.0		10,200,000
Proceeds from Legal Settlements																																					7,000,000
Increase (Decrease) in Regulatory Liabilities																																																		175,808,000		66,022,000		(8,639,000)
Increase (Decrease) in Other Regulatory Assets																																																		(25,424,000)		(19,745,000)		(46,505,000)
Increase (Decrease) in Deferred Fuel Costs																																																		(2,247,000)		(4,005,000)		17,760,000
Deferred Fuel Costs Current Liabilities		$ 980,000																																											$ 980,000					$ 980,000		0
Percentage of capacity and energy purchases under Unit Power Sales Agreement		17.00%																																											17.00%					17.00%
State Effective Income Tax Rate, Percent		7.50%																																											7.50%					7.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 155,000,000																																											$ 155,000,000					$ 155,000,000		143,000,000
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Regulatory Asset [Line Items]
Disposal Group, Assets, Regulatory Asset, Noncurrent		23,682,000																																											23,682,000					23,682,000
Disposal Group, Liabilities, Regulatory Liability, Noncurrent		397,000																																											397,000					397,000
Entergy Texas [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost		0																																											0					0		139,019,000
Regulatory Asset, Noncurrent		549,708,000																																											549,708,000					549,708,000		596,606,000
Regulatory Liability, Noncurrent		18,705,000																																											18,705,000					18,705,000		43,013,000
Deferred Fuel Cost - Net Asset (Liability)		(59,300,000)																																											(59,300,000)					(59,300,000)		139,000,000.0
Proceeds from Legal Settlements																																					33,000,000
Increase (Decrease) in Regulatory Liabilities																																																		(45,301,000)		(20,122,000)		(30,499,000)
Increase (Decrease) in Other Regulatory Assets																																																		(46,898,000)		17,924,000		157,349,000
Increase (Decrease) in Deferred Fuel Costs																																																		(198,290,000)		(119,096,000)		209,835,000
Deferred Fuel Costs Current Liabilities		59,271,000																																											59,271,000					59,271,000		0
Public Utilities, Property, Plant and Equipment, Transmission		2,054,000,000																																											2,054,000,000					2,054,000,000		1,882,000,000
Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Incremental Fuel and Replacement Energy Costs																																								$ 65,900,000
Regulatory Asset, Noncurrent		1,700,110,000																																											1,700,110,000					1,700,110,000		1,885,361,000
Regulatory Liability, Noncurrent		831,165,000																																											831,165,000					831,165,000		759,181,000
Deferred Fuel Cost - Net Asset (Liability)		(45,200,000)																																											(45,200,000)					(45,200,000)		(88,300,000)
Asset Impairment Charges																																																		131,775,000		78,434,000		0
Increase (Decrease) in Regulatory Liabilities																																																		97,049,000		240,762,000		(264,054,000)
Increase (Decrease) in Other Regulatory Assets																																																		(185,251,000)		6,197,000		120,603,000
Increase (Decrease) in Deferred Fuel Costs																																																		43,124,000		(228,021,000)		31,009,000
Deferred Fuel Costs Current Liabilities		$ 45,158,000																																											$ 45,158,000					$ 45,158,000		88,282,000
Percentage of capacity and energy purchases under Unit Power Sales Agreement		36.00%																																											36.00%					36.00%
State Effective Income Tax Rate, Percent		4.30%																																											4.30%					4.30%																			6.50%
Public Utilities, Property, Plant and Equipment, Transmission		$ 2,267,000,000																																											$ 2,267,000,000					$ 2,267,000,000		2,102,000,000
System Energy [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage				9.65%
Incremental Fuel and Replacement Energy Costs																																			$ 360,000,000
Earned return on equity																																			10.94%				10.94%
Regulatory Asset, Noncurrent		426,494,000																																											426,494,000					426,494,000		446,360,000
Regulatory Liability, Noncurrent		747,190,000																																											747,190,000					747,190,000		782,912,000
Increase (Decrease) in Regulatory Liabilities																																																		(37,713,000)		11,009,000		21,252,000
Increase (Decrease) in Other Regulatory Assets																																																		(19,866,000)		31,239,000		19,575,000
Public Utilities, Property, Plant and Equipment, Transmission		30,000,000																																											30,000,000					30,000,000		32,000,000
Storm Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		547,300,000																																											547,300,000					547,300,000		536,900,000
Storm Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		226,600,000																																											226,600,000					226,600,000		202,600,000
Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		4,000,000.0																																											4,000,000.0					4,000,000.0		3,900,000
Storm Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		286,500,000																																											286,500,000					286,500,000		297,300,000
Storm Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		29,800,000																																											29,800,000					29,800,000		33,100,000
Formula rate plan historical year rate adjustment [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		15,500,000																																											15,500,000					15,500,000		0
Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		15,500,000																																											15,500,000					15,500,000		0
Deferred COVID-19 costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		104,000,000.0																																											104,000,000.0					104,000,000.0		118,000,000.0
Deferred COVID-19 costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		47,800,000																																											47,800,000					47,800,000		47,800,000
Low interest debt		1,600,000,000																		$ 1,600,000,000																									1,600,000,000		$ 1,600,000,000			1,600,000,000
Deferred COVID-19 costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		10,200,000																																											10,200,000					10,200,000		13,000,000.0
Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		35,100,000																																											35,100,000					35,100,000		39,000,000.0
Other Regulatory Assets (Liabilities) [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		99,700,000																																											99,700,000					99,700,000		134,600,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		48,500,000																																											48,500,000					48,500,000		85,900,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		12,800,000																																											12,800,000					12,800,000		11,000,000.0
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		20,700,000																																											20,700,000					20,700,000		24,000,000.0
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		15,600,000																																											15,600,000					15,600,000		17,000,000.0
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		12,600,000																																											12,600,000					12,600,000		17,100,000
Deferred Fuel Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Asset Impairment Charges																																												$ 68,900,000
Excess accumulated deferred income taxes as a result of the Tax Cuts and Jobs Act [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities														$ 106,000,000
Subsequent Event [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Customer rate credits																																																																$ 20,235,000
State Effective Income Tax Rate, Percent																																																																	5.50%
Subsequent Event [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
State Effective Income Tax Rate, Percent																																																																	5.50%
Certain receipts under affiliated PPAs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Liabilities																$ 21,900,000
2022 Rate Case Settlement Relate Back [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		0																																											0					0		10,300,000
Refund from System Energy settlement with the APSC [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		8,200,000																																											8,200,000					8,200,000		93,000,000.0
Refund from System Energy settlement with the APSC [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		8,200,000																																											8,200,000					8,200,000		93,000,000.0
Shorter-term financing interest earnings [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		48,900,000																																											48,900,000					48,900,000		36,800,000
Shorter-term financing interest earnings [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		48,900,000																																											48,900,000					48,900,000		36,800,000
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		163,300,000																																											163,300,000					163,300,000		98,000,000.0
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		25,300,000																																											25,300,000					25,300,000		38,000,000.0
Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent		$ 138,000,000.0							$ 138,000,000	$ 138,000,000																																	$ 138,000,000		138,000,000.0					138,000,000.0	$ 138,000,000	60,000,000.0									$ 138,000,000
Increase (Decrease) in Regulatory Liabilities																																											78,000,000
2020 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																		$ 63,000,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																																	$ 64,900,000
Earned return on common equity																																	8.45%	8.45%
Public Utilities, Increase (Decrease) in Requested Rate, Amount																																	$ 14,200,000
2020 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Legacy Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																		$ 27,000,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																																	32,800,000
2020 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Legacy Entergy Gulf States Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																		23,700,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																																	$ 32,100,000
2020 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																																		$ 50,700,000
2021 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												$ 65,300,000
Earned return on common equity																												8.33%
2021 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Legacy Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												$ 86,000,000
2021 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member] | Legacy Entergy Gulf States Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												66,900,000
2021 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																												$ 152,900,000
2022 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																			8.38%
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 70,700,000
Public Utilities, Approved Rate Increase (Decrease), Amount																85,200,000			85,200,000
Projected Revenue Deficiency																			65,900,000
Credit relating to the distribution recovery mechanism																			$ 6,000,000
Earned return on common equity																			8.33%
2022 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																														6.70%
Public Utilities, Requested Rate Increase (Decrease), Amount																											$ 48,600,000			$ 69,000,000
Interim fuel refund for cumulative over-recovery																										$ 14,100,000
Public Utilities, Interim Rate Increase (Decrease), Amount																											$ 34,300,000		$ 24,300,000	34,500,000
Earned return on rate base																											5.99%
Percentage cap of retail revenues																													2.00%
Regulatory credits																										22,600,000
2022 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage																													9.35%
Earned return on equity																													6.88%
Public Utilities, Requested Rate Increase (Decrease), Amount																													$ 42,100,000
Public Utilities, Approved Rate Increase (Decrease), Amount																									$ 24,700,000
Requested reduction to requested rate increase																										17,100,000
Customer bill credits																																															$ 13,900,000
2022 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																										$ 119,900,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																							$ 102,800,000
Annual revenue constraint percentage																										4.00%
Projected Revenue Deficiency																							87,700,000																													$ 104,800,000
Netting Adjustment																							15,200,000																																	$ 15,200,000
Earned return on common equity																																																				7.40%				8.38%
2022 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 4,900,000
2022 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																														$ 48,600,000
Percentage cap on formula rate plan revenues																														4.00%
2022 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																										$ 79,300,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																							79,800,000	$ 79,800,000
2022 Formula Rate Plan Filing [Member] | Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent																																																								$ 19,000,000				$ 19,000,000
2022 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																													3,300,000
Public Utilities, Approved Rate Increase (Decrease), Amount																									1,800,000
2022 Formula Rate Plan Filing [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																													34,100,000
Public Utilities, Approved Rate Increase (Decrease), Amount																									18,200,000				4,700,000
Additional revenue increase due to previously approved amounts																									4,700,000
2023 Formula Rate Plan Filing [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage						9.70%
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 120,000,000
Basis points bandwidth above and below midpoint return on common equity						40
One-time incremental net decrease						$ 101,800,000
2023 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage																					6.67%
Public Utilities, Requested Rate Increase (Decrease), Amount																			26,500,000		$ 39,800,000
Public Utilities, Interim Rate Increase (Decrease), Amount																			$ 19,000,000	$ 27,900,000	19,800,000
Earned return on rate base																			6.10%
Increase (Decrease) in Other Regulatory Assets																		$ 800,000
Refund to retail customers																					$ 1,300,000
Regulatory credit for realignment of costs from formula rate plan to annual power management rider																		4,100,000
Regulatory credit for realignment of costs from formula rate plan to grid modernization rider																		$ 4,300,000
2023 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage																				9.35%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 25,600,000
Requested reduction to requested rate increase																	$ 8,300,000
Proposed formula rate plan rate mitigation through offsets to regulatory liabilities																	12,000,000
Customer bill credits															$ 8,900,000
Public Utilities, Increase (Decrease) in Requested Rate, Amount																	500,000
2023 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	$ 130,300,000
Annual revenue constraint percentage																	4.00%
Projected Revenue Deficiency																																																		$ 80,500,000
Reduction in recovery due to excess accumulated deferred income taxes from reductions in state income tax rates														24,700,000
Recovery related to the resolution of the 2016 and 2017 IRS audits from previous tax positions that are no longer uncertain														34,900,000
Netting Adjustment																																																						$ 49,800,000
Earned return on common equity																																																		8.11%				7.29%
2023 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Percentage cap of retail revenues																				2.00%
2023 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																	$ 88,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount														87,700,000
2023 Formula Rate Plan Filing [Member] | Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount															500,000
2023 Formula Rate Plan Filing [Member] | Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent																																																						$ 18,200,000
2023 Formula Rate Plan Filing [Member] | Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent														39,000,000
2023 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Oil and Gas, Average Production Cost Per Unit | $ / unit																		4.50
2023 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																				3.52%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 8,200,000
Public Utilities, Approved Rate Increase (Decrease), Amount															6,900,000
2023 Formula Rate Plan Filing [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity																				7.34%
Public Utilities, Requested Rate Increase (Decrease), Amount																				$ 17,400,000
Public Utilities, Approved Rate Increase (Decrease), Amount															$ 10,500,000					$ 3,400,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Return on Equity, Percentage										7.10%
Public Utilities, Requested Rate Increase (Decrease), Amount								$ 64,600,000		$ 63,400,000
Public Utilities, Approved Rate Increase (Decrease), Amount																																																				$ 300,000
Public Utilities, Interim Rate Increase (Decrease), Amount									$ 32,600,000																																				$ 8,700,000
Earned return on rate base								6.08%																																												6.81%
Annual depreciation expense increase											$ 55,200,000
Regulatory credits								$ 7,300,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | Residential [Member]
Regulatory Asset [Line Items]
Customer charge								$ 31.82
Average customer usage | kWh								1,000
2024 Formula Rate Plan Filing [Member] | Entergy Mississippi [Member] | General service [Member]
Regulatory Asset [Line Items]
Customer charge								$ 53.10
2024 Formula Rate Plan Filing [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage									9.35%
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 12,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 11,200,000
Requested reduction to requested rate increase							$ 1,600,000
2024 Formula Rate Plan Filing [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 102,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 82,700,000
Annual revenue constraint percentage							4.00%
Projected Revenue Deficiency			63,700,000
Netting Adjustment			$ 31,400,000																																																	$ 33,100,000
Earned return on common equity																																																				7.48%
State Effective Income Tax Rate, Percent		4.80%																																											4.80%					4.80%
2024 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Percentage cap of retail revenues									2.00%
2024 Formula Rate Plan Filing [Member] | Maximum [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 83,500,000			$ 82,600,000
2024 Formula Rate Plan Filing [Member] | Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent		$ 15,500,000																																											$ 15,500,000					$ 15,500,000
2024 Formula Rate Plan Filing [Member] | Subsequent Event [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount																																																$ 46,700,000
2024 Formula Rate Plan Filing [Member] | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Projected Revenue Deficiency																																																$ 69,500,000
Refund to retail customers	$ 30,100,000
Earned return on common equity																																																8.43%
State Effective Income Tax Rate, Percent																																																																	4.30%
2024 Formula Rate Plan Filing [Member] | Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity									5.87%
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 5,600,000
Public Utilities, Approved Rate Increase (Decrease), Amount					5,400,000
2024 Formula Rate Plan Filing [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Earned return on equity									8.66%
Public Utilities, Requested Rate Increase (Decrease), Amount									$ 7,000,000
Public Utilities, Approved Rate Increase (Decrease), Amount					5,800,000
2022 Base Rate Case [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount														$ 24,600,000					$ 54,000,000				131,400,000			131,400,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount													$ 24,100,000
Regulatory Asset																			4,800,000
Requested reduction to requested rate increase																							50,700,000
2022 Base Rate Case [Member] | Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																			$ 14,500,000
2022 Base Rate Case [Member] | 2022 Rate Case Settlement Relate Back [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent																$ 10,300,000
Transmission Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 9,700,000																												$ 66,100,000					$ 2,700,000
Incremental annual revenues																																$ 15,100,000
Public Utilities, Approved Rate Increase (Decrease), Amount																																				$ 2,700,000
Distribution Cost Recovery Factor Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount					48,900,000			$ 40,300,000
Incremental annual revenues		8,200,000			8,600,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount		48,500,000
Generation Cost Recovery Rider [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount																									5,700,000				92,800,000		$ 5,000,000
Incremental annual revenues																													$ 4,500,000
Fuel Reconciliation [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost										30,000,000																				$ 103,100,000													30,000,000								$ 30,000,000				$ 103,100,000						30,000,000	$ 103,100,000				$ 99,700,000
Margins from off-system sales made during the reconciliation period																	9,300,000
Increase (Decrease) in Deferred Fuel Costs																																																													1,600,000,000	1,700,000,000
Interim Fuel Surcharge [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Deferred Fuel Costs																																																												51,700,000
Power management rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in over (under) Energy Recovery					60,100,000							$ 47,000,000
Deferred Fuel Costs Current Liabilities																	$ 51,100,000
Request for Extension and Modification of Formula Rate Plan [Member] | Maximum [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Equity Capital Structure, Percentage														55.00%
Unit Power Sales Agreement Complaint [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																						$ 27,800,000
Unit Power Sales Agreement Complaint [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																						34,000,000
Unit Power Sales Agreement Complaint [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements																						41,700,000
Energy Cost Recovery Rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																										$ 291,700,000																														$ 121,900,000				$ 121,900,000							$ 100,000,000	$ 80,600,000
Increase (Decrease) in over (under) Energy Recovery					144,600,000							$ 142,000,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Portion of Approved Revenue Requirement Increase Subject to Possible Future Adjustment and Refund to Customers																																						$ 45,700,000
Energy Cost Recovery Rider Rate Per kWh									0.00882																																										0.01883		0.01639		0.00959			0.01547	0.01164
Requested Energy Cost Recovery Rider Rate Per kWh																																																			0.01883		0.01785				0.01882	0.01547
Proceeds from Legal Settlements																						$ 41,700,000
Credit for recovery attributed to net metering costs																																											9,000,000
Adjustment to over-recovery balance										$ 43,700,000																																	$ 43,700,000								$ 43,700,000										$ 43,700,000
Energy Cost Recovery Rider [Member] | Entergy Arkansas [Member] | February 2021 Winter Storms [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																											$ 32,000,000			$ 32,000,000																									$ 32,000,000							$ 32,000,000
Energy Cost Recovery Rider [Member] | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Requested Energy Cost Recovery Rider Rate Per kWh																																																	0.00882
Energy cost recovery rider and power management rider [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Deferred Fuel Cost																																																						$ 200,000,000
System Energy Settlement with the MPSC [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Number of retail customers																										460,000
Proceeds from Legal Settlements																											$ 235,000,000
One-time customer credit																										$ 80
Increase (Decrease) in Deferred Fuel Costs																							$ 198,300,000
Refund to retail customers																									$ 36,700,000
Grand Gulf Credit Rider [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Refund to retail customers							100,600,000																																		$ 92,300,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Approved Return on Equity, Percentage						9.50%
Public Utilities, Requested Return on Equity, Percentage						9.70%
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 120,000,000
Customer rate credits					$ 184,000,000	$ 184,000,000
Basis points bandwidth above and below midpoint return on common equity						40
Annual increase in nuclear depreciation rates						$ 15,000,000
Expenses reflecting effects of agreement in principle																																										$ 151,000,000
Expenses reflecting effects of agreement in principle, net of tax																																										$ 112,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member] | System Energy Settlement with the LPSC [Member]
Regulatory Asset [Line Items]
Customer rate credits						75,500,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Entergy Louisiana [Member] | Formula Rate Plan Global Settlement [Member]
Regulatory Asset [Line Items]
Customer rate credits						5,800,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount						140,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2023 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount						350,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2024 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount						375,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Maximum [Member] | Entergy Louisiana [Member] | 2025 [Member]
Regulatory Asset [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount						$ 400,000,000
2023 Entergy Louisiana Rate Case and Formula Rate Plan Extension Request [Member] | Credits expected to be shared with customers from resolution of the 2016-2018 IRS audit [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Liability, Noncurrent																																																				$ 38,000,000
Formula Rate Plan Global Settlement [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
One-time customer credit														$ 5,800,000
Formula Rate Plan Global Settlement [Member] | Associated with Late Fees from 2016 Flood [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities														6,200,000
Formula Rate Plan Global Settlement [Member] | Excess accumulated deferred income taxes as a result of the Tax Cuts and Jobs Act [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities														$ 105,600,000
System Energy Settlement with the LPSC [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Proceeds from Legal Settlements							$ 15,000,000
Grand Gulf Capacity Filing [Member] | Subsequent Event [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement																																																																	14.00%
Grand Gulf Capacity Filing [Member] | Subsequent Event [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Percentage of purchases under MSS-4 replacement tariff																																																																	2.43%
Interim Fuel Refund [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Interim fuel refund, including interest		$ 45,500,000
Additional generation and transmission resources [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Measurement of electrical voltage for new transmission line | kV				500
Measurement of electrical voltage for substation upgrades | kV				500
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | Three new combined cycle combustion turbine generation resources [Member]
Regulatory Asset [Line Items]
Generation Capacity | MW				2,262
Public Utilities, Property, Plant and Equipment, Generation or Processing				$ 2,387,000,000
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | New transmission line [Member]
Regulatory Asset [Line Items]
Public Utilities, Property, Plant and Equipment, Transmission				$ 546,000,000
Additional generation and transmission resources [Member] | Entergy Louisiana [Member] | Future additions contributed by customer [Member]
Regulatory Asset [Line Items]
Generation Capacity | MW				1,500